Lock-nut



F. C. WARNE.

LOCK NUT.

APPLICATION FILED MAR-15,1920.

Reissued July 27, 1920; v 14,928.

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PATENT oFF-lcE.

FREDERICK G. WABNE, OF MANSFIELD, OHIO.

' LOCK-NUT.

Specification of Reissued Letters Patent. Reigsue'd July 27, 192()Original No. 1,272,584, dated .Tuly lG, 1918, Serial No. 144,513, filedJanuary 25, 1917. Application for reissue filed larch 15, 1920. SerialNo. 366,070.

To all whom it may concern:

Be it known that I, FRnnERroK C. WABNE, a citizen of the United States,residing at Mansfield, in the county of Richland and State of Ohio, haveinvented certain new and useful Improvements in Lock-Nutsyand I herebydeclare the following tobe a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use the same. p

This invention relates to an improvement in nut locks of that typewherein the locking member is formed with a projection, adapted to beforced down into a groove or channel in the bolt, to lock the partsagainst relative rotation. 1

In nut locks-of this type it is important thatthe locking member be soconstructed and arran ed as to afford the maximum strength w en locked,without interfering with-the capability of the structure for restoringthe lockin gelement to normal position for free release of the parts.

Furthermore, particularly in automobile construction, where the appliednuts are sometimes dilficult to reach, it is of importance that the nutand locking means be so.

constructed as to avoid any interference with the use of the usualwrench, ordinarily I of the socket type, in applying and removin thenut.

The main object of the resent invention,

therefore, is a provision'o a locking means.

separate froni the nut, and which has a threaded connection with thebolt, and embodies a series of more or less flexible projections orfingers, any one of which, when 1nv register with a groove or channel inthe bolt, may be turned down into such channel to secure the appliedparts against inde-' pendent rotative movement on the bolt. 7

The fingers. are of such length that when seated in, the channel theywill be disposed at an inclination to the longitudinal plane of the boltother than a right angle, whereimplement into the groove and, beneaththe bent finger, to return said finger to'normal osition beyond thethreadsof the bolt, to ree the locked parts for the unscrewingoperation. The invention is illustrated in the accompanying drawings inwhcih:

Figure 1 is a view, in elevation partly in nut.

section, illustrating the improved nut lock,

the locking member being shown as integral with the nut.

v Fig. 2 is a vertical sectional view illustrating the improvement andshowing the nut lock member as separate from the nut.

.formed to provide an annular section 2,

having an external diameter approximately equal "to the minimumtransverse external dimension of the nut, to avoid projection beyond theside surface of the nut. The bore of the projection 2 is coextensivewith the bore of the nut and the surface thus provided is threaded at 3for cooperation with the threads l of the bolt 5. Projecting from thefree edge of the portion 2 are a series of fingers 6. These fingers maybe in any number, more thanwtwo, though his preferred' that they be insuflicient number to permit the cooperation of..the particular one 1with a channel 7 formed longitudinally of the bolt, in practically anyposition of the such fingers will be suflicient number to permit aproper seating of the nut, and operation 'of the lock, with one or the'other of said fingers in proper position for locking cooperation withthe channel.

It has been found that six or eight- By the term series or plurality as9 shown and described herein, and set forth in the attached claims, ismeant three or more of such fingers and is not meant to include alocking section having only two of such locking fingers or projections.

An essential feature of the invention resides in so constructing thefingers to form free relatively inner surfaces, that is those surfaceswhich form a practical continuaby to permit the application of aconvenient tion of the bore of the nut, are arranged beyond the threadedgrooves in said bore, so that when the nut lock is applied the innersurfaces of the fingers will lie wholly beyond and entirely free fromthe threadsof the bolt.

The improved nut lock is constructed with a view to providing maximumstrength and at the same time permitting the continued I .to the bolt,whereby they may be readily restored to normal position by an insertedtool, when desired to release the locking cooperation. Of course it ispreferred that in sectional contour and size, the fingers correspondmore or less accurately-with the similar dimension and shape of thechannel 7, and both have'their' side wall preferably on linescorresponding to radial lines of the bolt, so that as the finger isdriven into the channelthere will result a comparative wedging action,as shown more particularly in Fig. 3, to more effectively hold thefinger in place.

Attention iscalled to the fact that when the finger is forced out ofengagement with the channel by a suitable tool being wedged underneaththe end of the finger, the line of least resistance of the finger willbe at the point of the projection of the finger from the part 2,therefore the finger will be clearly withdrawn from engagement with thechannel or groove without destroying, mutilating or in any wayin'uringthe threads 0 the bolt, locking mem r or nut.

What is claimed as new is,

1. A nut and bolt lock, comprising a bolt having a threadedportionintersected by a longitudinally extending wedge shaped channel,and a nut having an axial cylindrical section having a threaded .boreand provided on its margin with a plurality of circularlyarrangedlongitudinally extending spaced fingers surrounding andextending parallel with the threaded portion of said bolt and havingoutwardly inclined sides adapted to be driven into said wedge shapedchannel to wedge within the latter in preventing relative movementbetween the bolt and nut.

2. A nut having a threaded bore, a. bolt, a cylindrical member of lessexternal diameter than the size of the nut and having a threaded borealinjng with and forming a continuation of the bore of the nut and aseries of circularly arranged fingers projecting from the free edge ofsuch cylindrical member and ,having their outer and inner surfacesrespectively coincident with the outer surface of the cylindrical memberand with the base of the threads thereof.

In testimony whereof I have aflixed my signature in the presence of twowitnesses.

I FREDERICK C. WARNE.

Witnesses:

C. A. 'IIINES, N. P. HENRY.

